package kr.hkit.powerjava.chapter24.work2.dao;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

import kr.hkit.powerjava.chapter24.work2.vo.Department;

public class DepartmentDao implements InterfaceDao<Department> {
	private ArrayList<Department> lists;
	private final String filePath = "departmentList.data";
	
	@Override
	public void insertItem(Department item) {
		if (!lists.contains(item)){
			lists.add(item);
		}		
	}
	@Override
	public void deleteItem(Department item) {
		if (lists.contains(item)){
			lists.remove(item);
		}		
	}
	@Override
	public void updateItem(Department item) {
		if (lists.contains(item)){
			lists.set(lists.indexOf(item), item);
		}		
	}
	@Override
	public Department searchItem(Department item) {
		Department searchValue = null;
		if (lists.contains(item))
			searchValue = lists.get(lists.indexOf(item));
		return searchValue;
	}
	@Override
	public void prnItemList(Comparator<Department> comp) {
		if (comp == null){
			Collections.sort(lists);
		}else{
			Collections.sort(lists, comp);
		}
		for(Department std : lists){
			System.out.println(std);
		}		
	}
	@SuppressWarnings("unchecked")
	@Override
	public void loadFile() {
		ObjectInputStream ois = null;
		
		try {
			ois = new ObjectInputStream(new BufferedInputStream(new FileInputStream(filePath)));
			lists = (ArrayList<Department>) ois.readObject();
		} catch (FileNotFoundException e) {
			try {
				new File(filePath).createNewFile();
				lists = new ArrayList<>();
			} catch (IOException e1) {
				e1.printStackTrace();
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (ois!=null)try{ois.close();}catch(Exception e){}
		}		
	}
	@Override
	public void saveFile() {
		ObjectOutputStream oos = null;
		try {
			oos = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(filePath)));
			oos.writeObject(lists);
		} catch (Exception e) {
		} finally{
			if (oos!=null)try{oos.close();}catch(Exception e){}
		}		
	}
	
}
